RT Journal Article SR Electronic T1 A bird in the hand . . . JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 1324 OP 1324 DO 10.1136/bjo.86.12.1324 VO 86 IS 12 A1 A D Dick YR 2002 UL http://bjo.bmj.com/content/86/12/1324.abstract AB